Results 11 to 20 of about 1,905 (201)
Segregation-Assisted Plasticity in Ni-Based Superalloys [PDF]
Metallurgical and Materials Transactions A, 2018 Abstract Correlative high-resolution transmission electron microscopy and energy-dispersive X-ray spectroscopy are used to study deformation-induced planar faults in the single-crystal superalloy MD2 crept at 800 °C and 650 MPa. Segregation of Cr and Co at microtwins, anti-phase boundaries (APB), and complex/superlattice extrinsic and ...
Barba Cancho, D +4 more
openaire +2 more sources
Slip analysis in a Ni-base superalloy [PDF]
Acta Materialia, 2005 A Ni-base superalloy single crystal with Gamma/Gamma' structure was tested at room temperature along the , and directions. Consistent with previously reported investigations, this alloy did not obey the Schmid law and the CRSS (critical resolved shear stress) was noticeably lower for the -oriented samples.
Materials Science and Engineering Department, University of Florida, P.O. Box 116400, Gainesville, FL 32611, USA ( host institution ) +3 more
openaire +2 more sources
Frontiers in Materials, 2022 Novel Co-based superalloys, as potentially ideal aero-engine hot section materials, have a higher temperature bearing capacity and better oxidation resistance than Ni-based superalloys.
Xuming Zhang +11 more
doaj +1 more source
Thermal transport properties of Ni–Co-based superalloy
AIP Advances, 2020 We report systematic measurements of thermal transport properties of a Ni–Co-based superalloy at temperatures ranging from room temperature to around 800 K.
Asuka Miura +3 more
doaj +1 more source
Metals, 2021 Ni-Cr-Mo-based superalloy is widely used as a key component in many critical environments. To ensure that the manufacturing process does not impact the long-term service performance of these components, the aging precipitation behavior at different ...
Pengyan Zhang +3 more
doaj +1 more source
Probing single crystal orientation by X-ray diffraction for nickel-based superalloys
Results in Physics, 2021 The deviation angles of Ni-based single crystal superalloys are investigated by two techniques of rotating orientation X-ray diffraction (RO-XRD) and back-reflection Laue X-ray diffraction (BRL-XRD).
Yumin Wang +3 more
doaj +1 more source
Cohesive Strength and Structural Stability of the Ni-Based Superalloys [PDF]
Materials, 2021 The influence of alloying elements on the cohesive strength of metal heat-resistant alloys (HRAs) is analyzed. Special parameters are introduced to characterize the individual contribution of each alloying element. These are the partial molar cohesion energy of the matrix (χ) and the cohesive strength of the grain boundaries (η) and can be calculated ...
Igor Razumovskii +4 more
openaire +2 more sources
Stress corrosion of Ni-based superalloys [PDF]
Materials at High Temperatures, 2017 AbstractThe development of gas turbines to increase fuel efficiency is resulting in progressively higher operating temperatures in the under platform regions of the blades. These regions have traditionally been considered low risk areas. However, higher metal temperatures combined with stresses and the deposition of contaminants from the cooling air ...
Brooking, Laurie +3 more
openaire +2 more sources
Microstructural aspects of fatigue in Ni-base superalloys [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015 Nickel-base superalloys are primarily used as components in jet engines and land-based turbines. While compositionally complex, they are microstructurally simple, consisting of small (50–1000 nm diameter), ordered, coherent Ni3(Al,Ti)-type L12or Ni3Nb-type DO22precipitates (calledγ′andγ′′, respectively) embedded in an FCC substitutional solid solution ...
openaire +2 more sources
On the origin of mosaicity in directionally solidified Ni-base superalloys [PDF]
Acta Materialia, 2021 This article addresses the formation of low angle grain boundaries which give rise to mosaicity, a phenomenon which has only recently received attention in the single crystal Ni-base superalloy field. In this work, post-mortem advanced microscopy characterisation techniques are employed to deduce the dendrite tip growth kinetics from transverse ...
Joel Strickland +8 more
openaire +1 more source